Evaluating car-sharing switching rates from traditional transport means through logit models and Random Forest classifiers
- 4 January 2021
- journal article
- research article
- Published by Taylor & Francis Ltd in Transportation Planning and Technology
- Vol. 44 (2), 160-175
- https://doi.org/10.1080/03081060.2020.1868084
Abstract
Positive impacts of car-sharing, such as reductions in car ownership, congestion, vehicle-miles-traveled and greenhouse gas emissions, have been extensively analyzed. However, these benefits are not fully effective if car-sharing subtracts travel demand from existing sustainable modes. This paper evaluates substitution rates of car-sharing against private cars and public transport using a Random Forest classifier and Binomial Logit model. The models were calibrated and validated using a stated-preference travel survey and applied to a revealed-preference survey, both administered to a representative sample of the population living in Turin (Italy). Results of the two models show that the predictive power of both models is comparable, albeit the Logit model tends to estimate predictions with a higher reliability and the Random Forest model produces higher positive switches towards car-sharing. However, results from both models suggest that the substitution rate of private cars is, on average, almost five times that of public transport.Funding Information
- European Union Horizon 2020 (769513)
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